Struct graphics::context::Context

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pub struct Context {
    pub viewport: Option<Viewport>,
    pub view: Matrix2d,
    pub transform: Matrix2d,
    pub draw_state: DrawState,
}

Expand description

Drawing 2d context.

Fields

viewport: Option<Viewport>

Viewport information.

view: Matrix2d

View transformation.

transform: Matrix2d

Current transformation.

draw_state: DrawState

Current draw state settings.

Implementations

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impl Context

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pub fn new() -> Context

Creates a new drawing context.

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pub fn new_viewport(viewport: Viewport) -> Context

Creates a new context with absolute transform in point coordinates.

This function assumes the default coordinate system being centered with x axis pointing to the right and y axis pointing up.

Returns a drawing context with origin in the upper left corner and x axis pointing to the right and y axis pointing down.

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pub fn new_abs(w: Scalar, h: Scalar) -> Context

Creates a new drawing context in absolute coordinates.

This function assumes the default coordinate system being centered with x axis pointing to the right and y axis pointing up.

Returns a drawing context with origin in the upper left corner and x axis pointing to the right and y axis pointing down.

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pub fn view(self) -> Self

Moves the current transform to the view coordinate system.

This is usually [0.0, 0.0] in the upper left corner with the x axis pointing to the right and the y axis pointing down.

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pub fn reset(self) -> Self

Moves the current transform to the default coordinate system.

This is usually [0.0, 0.0] in the center with the x axis pointing to the right and the y axis pointing up.

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pub fn store_view(self) -> Self

Stores the current transform as new view.

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pub fn get_view_size(&self) -> Vec2d

Computes the current view size.

Trait Implementations

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impl Clone for Context

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fn clone(&self) -> Context

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Transformed for Context

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fn append_transform(self, transform: Matrix2d) -> Self

Appends transform to the current one.

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fn prepend_transform(self, transform: Matrix2d) -> Self

Prepends transform to the current one.

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fn trans(self, x: Scalar, y: Scalar) -> Self

Translate x and y in local coordinates.

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fn rot_rad(self, angle: Scalar) -> Self

Rotate radians in local coordinates.

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fn orient(self, x: Scalar, y: Scalar) -> Self

Orients x axis to look at point locally. Read more

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fn scale(self, sx: Scalar, sy: Scalar) -> Self

Scales in local coordinates.

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fn shear(self, x: Scalar, y: Scalar) -> Self

Shears in local coordinates.

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fn rot_deg(self, angle: Scalar) -> Self

Rotates degrees in local coordinates.

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fn trans_pos<P: Into<Vec2d>>(self, pos: P) -> Self

Translate position in local coordinates.

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fn orient_pos<P: Into<Vec2d>>(self, pos: P) -> Self

Orients x axis to look at point locally.

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fn scale_pos<P: Into<Vec2d>>(self, pos: P) -> Self

Scales in local coordinates.

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fn zoom(self, s: Scalar) -> Self

Scales in both directions in local coordinates.

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fn flip_v(self) -> Self

Flips vertically in local coordinates.

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fn flip_h(self) -> Self

Flips horizontally in local coordinates.

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fn flip_hv(self) -> Self

Flips horizontally and vertically in local coordinates.

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fn shear_pos<P: Into<Vec2d>>(self, pos: P) -> Self

Shears in local coordinates.

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impl Copy for Context

Auto Trait Implementations

impl RefUnwindSafe for Context

impl Send for Context

impl Sync for Context

impl Unpin for Context

impl UnwindSafe for Context

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct graphics::context::Context

Fields

Implementations

impl Context

pub fn new() -> Context

pub fn new_viewport(viewport: Viewport) -> Context

pub fn new_abs(w: Scalar, h: Scalar) -> Context

pub fn view(self) -> Self

pub fn reset(self) -> Self

pub fn store_view(self) -> Self

pub fn get_view_size(&self) -> Vec2d

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

fn clone_from(&mut self, source: &Self)

impl Transformed for Context

fn append_transform(self, transform: Matrix2d) -> Self

fn prepend_transform(self, transform: Matrix2d) -> Self

fn trans(self, x: Scalar, y: Scalar) -> Self

fn rot_rad(self, angle: Scalar) -> Self

fn orient(self, x: Scalar, y: Scalar) -> Self

fn scale(self, sx: Scalar, sy: Scalar) -> Self

fn shear(self, x: Scalar, y: Scalar) -> Self

fn rot_deg(self, angle: Scalar) -> Self

fn trans_pos<P: Into<Vec2d>>(self, pos: P) -> Self

fn orient_pos<P: Into<Vec2d>>(self, pos: P) -> Self

fn scale_pos<P: Into<Vec2d>>(self, pos: P) -> Self

fn zoom(self, s: Scalar) -> Self

fn flip_v(self) -> Self

fn flip_h(self) -> Self

fn flip_hv(self) -> Self

fn shear_pos<P: Into<Vec2d>>(self, pos: P) -> Self

impl Copy for Context

Auto Trait Implementations

impl RefUnwindSafe for Context

impl Send for Context

impl Sync for Context

impl Unpin for Context

impl UnwindSafe for Context

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,